From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.ciao.gmane.io!not-for-mail From: Dmitry Gutov Newsgroups: gmane.emacs.devel Subject: Re: emacs rendering comparisson between emacs23 and emacs26.3 Date: Sun, 5 Apr 2020 22:28:26 +0300 Message-ID: References: <834ku43c61.fsf@gnu.org> <83k12zz6ds.fsf@gnu.org> <054393f3-3873-ab6e-b325-0eca354d8838@gmx.at> <20200403174757.GA8266@ACM> <20200404104553.GA5329@ACM> <07fe3b69-3ab2-3173-0696-cb17809e2b91@gmx.at> <83blo7v68b.fsf@gnu.org> <1845d7aa-9ae4-3d95-6a30-c7b1d8d8adec@gmx.at> <83a73qt6zs.fsf@gnu.org> <97c4254e-ff43-8402-3645-f713c408c245@gmx.at> <83y2r9syby.fsf@gnu.org> <83tv1xsset.fsf@gnu.org> <83pnclsqew.fsf@gnu.org> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Injection-Info: ciao.gmane.io; posting-host="ciao.gmane.io:159.69.161.202"; logging-data="75572"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.4.1 Cc: rudalics@gmx.at, rrandresf@gmail.com, emacs-devel@gnu.org, rms@gnu.org, acm@muc.de To: Eli Zaretskii Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Sun Apr 05 21:29:20 2020 Return-path: Envelope-to: ged-emacs-devel@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1jLAxL-000JYI-U0 for ged-emacs-devel@m.gmane-mx.org; Sun, 05 Apr 2020 21:29:19 +0200 Original-Received: from localhost ([::1]:51116 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jLAxJ-0002GB-Gi for ged-emacs-devel@m.gmane-mx.org; Sun, 05 Apr 2020 15:29:17 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:41789) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jLAwZ-0001da-BX for emacs-devel@gnu.org; Sun, 05 Apr 2020 15:28:33 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1jLAwY-0002mG-Eb for emacs-devel@gnu.org; Sun, 05 Apr 2020 15:28:31 -0400 Original-Received: from mail-wr1-x42b.google.com ([2a00:1450:4864:20::42b]:40924) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1jLAwY-0002lg-8e; Sun, 05 Apr 2020 15:28:30 -0400 Original-Received: by mail-wr1-x42b.google.com with SMTP id s8so12736379wrt.7; Sun, 05 Apr 2020 12:28:29 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=sender:subject:to:cc:references:from:message-id:date:user-agent :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=f3xfSCJFKwJ4CdYpQ6c3WpMuEEBfSgYgCqz96XS09Yc=; b=dcyIvBfExEPyUw+cboB8KzZS/dLScO5rQYoo4f93fZlJbsGVX3bnjZkHvXAnQl9pKS NZYoiXO76pb6hvAvbIvjyDaB2eEL6yc3mjKpTDFFb2QYICUEANyehJDwGnSnJv+V+SkT URN0QPfRqqL/WnMcLzw+ppGCp7qNeueeS8CXrIvkm0j/yZAMZ23vOw2J2I5YPFaLQ6cv hbG28zPOrbGfDSYa0U3iSguuYeCPXgX6ExfW+2tP5dCPirNPOWnV+o92Vjv/KaN2bStK hciTqHN/6VCS9ofJlcInI43BMcgickJjhsabqZmdl1Yif2nKfHTxg/8kH3FXHc9DQzIB DHOg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:subject:to:cc:references:from:message-id :date:user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=f3xfSCJFKwJ4CdYpQ6c3WpMuEEBfSgYgCqz96XS09Yc=; b=Iy7Ff3J/DVOlEiWWvgJMTCump6HsUzW5+XPAFrcQK0HuLy1vAI8r9cQK8TdTzpwasi PA213wR9KI2gYBYoWewHpBNVByjq4Y2PvMQRaEl6e60WWY1gCOmDP3Fl+EUSidp4rsp1 prRBoi5PEUnFgHncz2kq06vdr5xLyF8xFvf5AkRIgQObbcFeYpj2/Qi8VOp7sXpXuOyP 2qAMbfPjI2bXCF82KgFK1pYrBKgl8TS9aB+/MSM/X+LSYlUEv0l2E9YJrCTdWWmP7mVB K8aD+NneS5foqnUnoeYHc0xvU4/7IYygQZnU/QkAVFdIvAqca2ERlJP7jIrA5y9YmQu0 8lVw== X-Gm-Message-State: AGi0Pub7WPbsg2ArSi5OCIGw2osrmenYGwG6kLfEJbdbuST8AhI5z+2m hgBRU3f0UqNU0lYBkLS6BrXd273fv6c= X-Google-Smtp-Source: APiQypKgpm5Y4RYAJ4qej6BWVW1aVNaZ6b1UokpFkXiU9mydv93mOYnMCmeZx24WcKSMxiIHxtmPqw== X-Received: by 2002:adf:efc2:: with SMTP id i2mr19701799wrp.420.1586114908493; Sun, 05 Apr 2020 12:28:28 -0700 (PDT) Original-Received: from [192.168.0.2] ([66.205.73.129]) by smtp.googlemail.com with ESMTPSA id f187sm22129138wme.9.2020.04.05.12.28.27 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sun, 05 Apr 2020 12:28:28 -0700 (PDT) In-Reply-To: <83pnclsqew.fsf@gnu.org> Content-Language: en-US X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2a00:1450:4864:20::42b X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Original-Sender: "Emacs-devel" Xref: news.gmane.io gmane.emacs.devel:246489 Archived-At: On 05.04.2020 22:06, Eli Zaretskii wrote: >> What's the difference between redisplay being slow and it being unable >> to "keep up"? I don't understand, sorry. > > That's not the important difference. The important difference is that > you want the input processed faster, without waiting for slow > redisplay. Two chief ways to do that are: - To work faster - To do less work Ideally, we should take advantage of both. Skipping parts of redisplay could help with #2. >> And in this case, IIUC, jit-lock is part of redisplay. And it's slow >> enough for this to be noticeable. > > It isn't jit-lock that's slow, it's the fontification functions it > calls. Yes, obviously.